AS & A Level Marine Science (9693) — October–November 2023, Paper 11

6 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.

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Question 1 · 11 marks · Marine organisms

Lybia tessellata is a boxer crab that uses sea anemones as weapons. The table in Fig. 1.1 shows the classification hierarchy of the boxer crab. The domain and two other groups…

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Question 2 · 12 marks · Tides and shore

Fig. 2.1 shows a tidal chart for a coastal location over one month. Use Fig. 2.1 to identify the day on which a spring tide occurs.

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Question 3 · 12 marks · Marine organisms

Fig. 3.1 shows a diagram of a kelp macroalga. Identify the structures labelled J, K, L and M in Fig. 3.1.

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Question 4 · 10 marks · Ocean layers

Fig. 4.1 shows the ocean zones defined by depth and the percentage of sunlight that penetrates to each zone. The deepest ocean zone shown in Fig. 4.1 is the hadal zone. Name one…

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Question 5 · 12 marks · Ocean currents

El Niño is a climate phenomenon caused by warming of the eastern Pacific Ocean surface waters. Describe six effects of El Niño on the natural environment.

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Question 6 · 18 marks · Water chemistry

Fig. 6.1 shows a particle model of water in solid, liquid and gas states. Discuss the strengths and limitations of using this particle model to represent water molecules in these…

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